Circuit-closer.



PATEL'TED SEPT. 2

T. A. BEMUF.

APPLICATION FILED MAE. Z,

Witt Maw ruoinis ALTON menus, OF nosrou, MASSACHUSETTS,

. ,t ASSIGNOR TO T. ALTON BEMUS .COBiPAijiY, INCORPORATED, OF BOSTON; -MASSACHUSETTS, A CORPORATION OF.

' MASSAGE. esn'r'rs;

CIRCUIT-CLOSER.

Nuisances.

Specification of Letters Patent. Application filed larch 2,1905. Serial No. 248,153.

Patented Sept. 24, 1907.

the invention, such as. will enable others skilled in the art to which it appcrtains to make and use the same.

The-primary object of this invention is to provide acircuit closer, especially adapted for multiple explosion engines, wherein the wires will be secured to a 3 part which may be readily removed from the shift carobjects are. to s construct the brush as to insure the engagement thereof with the Contact plates and guard against'brcakn-ge or undue wear; and also to enable the complementary parts'to relatively shifted so as to advance or postpone the $130 oiclosing the circuit acring the complementary part. or brush. And further cording to the speed at n hiclpitis desired the engine should run.

The invention will be hcreinaftei fully set forth and.

particularly ointed out in the claims. 1

in the nceoinpz nying din-Wing's, Figure 1 is a view in perspective. Fig. 2 is at vertical sectional view. Figs. 3 and 4 are face views oi the two parts constituting the inclusure or casing.

Referring to the drawings, 1 designates the rotary shaft upon which the circuit closer is located, such Slutil' being preferably that. by which the valves of a gas 0' "neare operated;

2 designates an inclosing casing preferably constructctl throughout oi insulating material, with the right well 4 and a circumferential wall. 5, in which latter are set. Contact plates 6 carrying binding posts Tito which the several wires of n. multiple gns engine may be secured. These contact plates are prc-iembly coun tersunk in the inner surface oi the circumflex-initial wall, so as to be flush therewith. The cover plate 3 is preienthly secured to the cup by nuttt-d screws 8, and

- is provided with an extension 9 to-u'bich a rod or wire lUruny he s cured for shifting the positions of the cusing and the contact plates. The plate I is formed with a. or .ltml outwardly extending boss (uh-d with a bushing 12, and into this bushing is extended a lwaring slccvc 13 having atone end a flange H. conforming to the :it the hub of pinto 5. 'lhi. ru e "211) i -rm part; of a bracket secured to some permanentsupport, suchns the under side of a motor vehicle, such bucket being indicated in dotted lines itt 15, Fig. l The shaft 1 passes through this sleeve, and is free to rotate -e ,imi that its cover plate I) preierably made of, .netal. The casing comprises a cut: having an outer;

therein, while the plate 3 of the casing is free to rotate on said sleeve.

16 designates the contact blush which is secured fast on shaft 1 at right angles thereto and designed to rotate within the inclosing casing 2 and effect contact with the several contact plates 6. This brush comprises a ball 17 in the outer end of a sleeve 18 telescoping nu inner larger sleeve 19, which latter is secured to a ring 20, preferably by being screwed onto a threaded boss extending from the periphery of such ring, a spring 21 being incited within the telescoping sleeves so as to hold the sleeve 18 and ball 17 in their outwardly projected positioiis, and yet allow of their being forced inwardly as far as the outer end of the immovable sleeve 19. The ring 20 is keyed to the endot shatt 1, prefer-- locking screw.

From what has been said it will be seen the as the shaft 1 rotates the ball 17 oi the brush wilh travel around the circumferential wall of the inclosing cap, in either direction, and engage with each of the several contact plates 6, and by reason of the spring prcaiurc a firm and pasitive contact is bad in each instance. But even aside from the pressure oi the spring the centrifugal action insures the engagement of the ball contact with the plates 6. Furthermore, the brush as thus constructed is extremely strong rind durable and will allow of a gr ent umount of usage owing to its self adjustuient, the inelosing spring tending to always hold the movable parts of the brushiu their outermost positions.

In pincticc, when it is desired to advance or retard the time oi closing the circuits, as when it is desired to increi se or decrease the speed of an engine, it is only necessary to shiit the iniclosing casing on its independent bmring atlorded by the. sleeve 13. I have found it of decided advantage to provide this independent bearing for the contact carrying casing in that it permits oi the shifting of the latter free from any muntcructiug influences of the. rotary shaft. Further-- more, when it is desired to gain access to the brush it is only necessary to remove the nuts oi screws 8 and withdimv the cap to which the several wires are socured. in this Wit-y nll entanglement or danger oi breaking or otherwise interfering with the wires is avoided, since they mnyrelnnin permanently fastened to the removed cap. This latter, itwiil be noted, is beyond the end of the shalt, only the cover plate 3 being nounted on such shalt.

A circuit closer constructed as herein described is extremely simple and inexpensive and not. liable to read- 1. The combinatlonwith a rotary shaft, the casing hav ing a circumferential wall, contacts in the 1nner face of snid wall, of a brush flx'ed to said shaft comprising two 10 telescoping sleeves, and a hall at the outer end 0! one 01' .Jsnid sleeves, lhe other sleeve being fixedly mounted, and a spring lnelosed by said sleeves, as set forth.

2. The combination with a rotary shaft, the casing hav- .ing a eh'eumferential wall, and a series ot contact plates in the inner face of said wail, ota brush fixed to said shaft comprising a ring having a threaded boss, two telescoping sleeves, one being secured to said boss, a bail in the outer end of the other sleeve, and a spring for holding sueh latter sleeve and ball in their extended positions.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

'biIoMAs ALTON BEMUS.

Witnesses "mums E. WEs'r, ihtexcts S. Mnoums. 

